The furnace part of my Intertherm works great, but when the air conditioning is running, it leaks water terribly. Where should we begin? We are trying to troulbeshoot and fix ourselves. My husband is an electrician, but no HVAC man. HELP PLEASE!

It could be as simple as a plugged condensate drain, Have you replaced the filter lately? Can you tell where the water is coming from?

The furnace part of my Intertherm works great, but when the air conditioning is running, it leaks water terribly. Where should we begin? We are trying to troulbeshoot and fix ourselves. My husband is an electrician, but no HVAC man. HELP PLEASE!
Where does it leak water at? Can you pinpoint a leak, or what it's leaking on? My guess is also the condensate drain clog, or a connection on the evaporator (inside coil) drain pan. You might want to clean the drain anyway...one way to do that is to hook a shop vac up to the drain OUTSIDE and sucking out anything that might be in it. Look at your drain pan inside the air handler and see if water is backing up in it (not draining)(be careful pulling off and putting back on the access panels though...wires are hot and coils are easily damaged)